Civil Engineering MCQs

Elongation of Bars Questions with solutions MCQs

1. A steel flat of thickness 10 mm tapers uniformly from 60 mm at one end to 40 mm at the other end in a length of 600 mm. If the bar is subjected to a load of 80 KN, find its extension. Take E=2×10^5 MPa.

A

0.486

B

0.386

C

0.225

D

0.724

Elongation of Bars J.E Civil 2023
Correct Answer : A
Explanation :

Using the formula for tapered bars: δ = (4PL)/(Ebt1t2) × (t1−t2)/ln(t1/t2). Substituting values gives δ ≈ 0.486 mm.

Correct Answered :

Wrong Answered :

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